The new background updates feature in WordPress 3.7 is great for security and productivity, but it can be tricky getting it to work. This post explains how the same technique posted here also worked for enabling background updates.

Are you hosting your WordPress sites on one of those hosts where WordPress asks you to provide FTP details before upgrading itself or upgrading plugins? So when you click to do an upgrade, instead of just launching into the update process, you get a screen that looks like this instead: